feat: brand the npm page, CLI output, and reports (#432)

* docs: rebuild the npm package README on the main README's identity

* docs: point the README banner fallback at an asset that exists

* docs: declare the npm package author, homepage, and issue tracker

* docs(cli): retire "Framework" and settle on the canonical product line

* docs: describe the banner image in alt text instead of repeating the lockup

* feat(cli): print a plain-text banner when stdout is not a terminal

* feat(report): attribute the markdown report from a shared brand constant

* feat(cli): frame the plain-text banner with rules and split the version line

* docs: drop the URL from the npm author field

apps/cli/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@keygraph/shannon",
   "version": "0.0.0",
-  "description": "Shannon - Autonomous white-box AI pentester for web applications and APIs by Keygraph",
+  "description": "Shannon is an autonomous white-box AI pentester for web applications and APIs, by Keygraph.",
   "type": "module",
   "main": "dist/index.mjs",
   "bin": {
@@ -35,8 +35,12 @@
     "appsec",
     "keygraph"
   ],
-  "author": "",
+  "author": "Keygraph, Inc.",
   "license": "AGPL-3.0-only",
+  "bugs": {
+    "url": "https://github.com/KeygraphHQ/shannon/issues"
+  },
+  "homepage": "https://github.com/KeygraphHQ/shannon#readme",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/KeygraphHQ/shannon.git",